There is a workaround for updating the bootloader, but I often use “how well does it scale” as a measurement.
Atomic should replace traditional distros, and apart from the need for improved tooling everywhere (like easily converting random files to RPMs) it has the big issue that currently GRUB is not updated.
This means the system is not possible to keep installed over many versions, without tweaks. This will hopefully be fixed with bootupd integration in F41.
This means users with secureboot get issues on newer Kernels, if they installed Atomic a few versions back.